Internal-combustion engine.



J. L. BENNETT (9. 0.. C. SEVEBECK.

lNTERNAL COMBUSTION ENGINE.

APPLICATION FILED SEPT. 14. 19x4.

, Paianiedkug. 17, 1915.

2 SHEETSSHEET 1.

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MTERNAL COMBUSTION ENGINE. Amucmow man $5 97.14, 1914 0, 6. Sam/Deck M 3% 7 a 1 M f ww fir m U an STATES Para @Fhl 32.111335 L. BENNETT AND OTTO C. SEVEBECK, OF SAN DIEGO, CEkLIFGELIl'IA.

. INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Aug. 3W, 5 15.

Application filed September 14,1914. Serial No. 861,648.

To all 111. 1 om it may concern Be itknown that we, JAMES L. BENNETT and OTTO C. Snvnnncx, citizens of the United States, residing at San Diego, in the county of San Diego and State of California, have invented certain new and useful Improvements in Internal-Combustion En.- gines, of which the following is a specification.

Our invention relates to improvements in internal combustion engines, and has particular reference to such engines embodying a rotatable valve for controlling the supply and exhaust of gas and products of combustion, respectively, to and from-the cylinder or cylinders of the, engine.

An important object of the invention is to providev a rotary valve of simple construction, having an interior axially extending tubular exhaust shell, surrounded by a gas supply passage, whereby the gas is heated prior to entering the cylinder or cylinders and retains the exhaust tubular shell properly cooled.

-A further object of the invention is to provide a valve of the above mentioned character, formed in an integralcasting or construction, thusrendering'the same inexpensive to manufacture, strong, and durable and comparatively small.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figural is a horizontalsectional view through an engine embodying our invention with the valve in elevation, Fig. 2 is a transverse sectional view taken on line 22 of 1, Fig. 8 is i a longitudinal vertical sectional view taken on line 3-3 of Fig. 1, and, Fig. 4 is a transverse vertical sectional view taken on line H of Fig. 3.

in the drawings, wherein for the purpose of illustration is shown a preferred embodimentof the invention, the numdral-5 designates preferably vertically arranged cylinders, two in number, provided with a water I jacket 6, extending over the upper closed end of the cylinders, as more clearly shown in Fig. at.

Arranged between the cylinders 5, as more clearly shown in Figs. 3 a, is a preferably horizontal valvecasing 7,. having a main bore 8, and a contracted inner bore 9, as shown. The water jacltet 6 extends through this valve casing, the ends of the valve casing 0 .ng closed by removable heads 10, havingopenings or water jackets 11, in free communication with the water jacket 6. The heads 10 are secured to the valve casing 7 by means of bolts 12 or the like. Rotatably mounted within the valve casing 7 is a double walled tubular preferably integral valve 13.

As more clearly shown in Figs. 2, 8, and 4, this valve comprises an outer tubular shell 14, having its ends closed by heads 15, carrying atubular spindle 16 and a solid spindle 17. The'spindles' l6 and 17 extend through openings 18 in the heads 10, as

. more clearly illustrated in Fig. 8. Extend with combined gas and exhaust ports ;formed upon the upper end of the inner n v I 1 progects inwardly therefrom with its 1nte-' rior in free communication with the interior of the tubular spindle, sard tubular spindle discharging to the atmosphere or to the exhaust pipe or manifold.

As more clearly shown in. Figs. 3 and 4, the outer tubular shell 1% is provided in its inner portion with a gas port. 21, adapted to be successively brought into registration walls of the cylinders 5, as more clearly I shown in Figs. 1 and 4. As clearly shown in Fig. 4, an exhaust port 23 is formed in the inner portion of the valve, the same hav-. ing, tree communication with the interior of the interior exhausttubular shell 19, while having no communication with the gas supply passage 20. Thisinner exhaust port \is adapted to he suceessively orotat t in 0 registration with the ports 22;,

As more clearly shown in Fig. 2, the outer f tubular shell 1 L of the rotatable valve is pipe 26,

. the port 21.

.As more clearly shown in Figs. 1 aiad 3,

,the rotatable valve is provided with annular grooves 27, receiving packing rings 28.

- The numeral 29 designates all bearings, ar-

ranged within the ends of he valve casing 17 and receiving the spindles 16 and 17 as shown. Secured to the spindle 17 is an extension or' trunnion 30 carrying a worm wheel31, engaged and driven by a worm wheel 32, secured to a vertical shaft 33.

This ,vertical shaft is driven by the crank shaft of the engine whereby the rotatable valve is driven at one-half crank-shaft speed, v I

The operation of the engine is as follows :The engine being a four cycle en- 'gine, there are four strokes of the piston for each complete revolution of the valve. Assuming that the right-hand piston (not shown) is down, and the'rotatable valve has just been moved to the position whereby the exhaust port 23 is in registration with the I 'port22, upon the up-stroke of the righthand piston, the valve is further turned for closing the exhaust port. Upon the down stroke of the right-hand piston the valve is turned for bringing'port 21 into registration with port 22, whereby the fuel is supplied into the cylinder, the'valve having made one-half a revolution. The right-h'and piston is now down and the valve is in a position to just about open the exhaust port of the left-hand cylinder, the left-hand piston being also down. Upon the next stroke, the righthand piston comes up oncompres sion, while the left-hand cylinder exhausts. Upon the next stroke, the right-hand piston moves down on its firing stroke, while the lefthand piston draws in -a fresh charge. The

right-hand piston is again down and the valve has made av complete revolution, the same being ready to. open exhaust port for the right-hand cylinder. This operation is of course repeated indefinitely.

We wish it understood that the invention is not restricted for use in connection'with 'a four cycle engine as hereinabove described,

and that the same may be employed in connection with any type of engine with which it is adapted to cooperate.

It is to be understood that the form of our invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claim.

Having thus described the invention, what is claimed is:

A rotatable valve tion engine, comprising an outer tubular shell provided near its outer end with a gas supply port and-near its inner end with-a for an internal combusgas port whereby the gas is forced totravel for substantially the entire length of the,

outer tubular casing before passing into the cylinder of the engine; and an interior tubu-'- lar exhaust shell having a substantially smaller diameter than the outer tubular shell and extending longitudinally thereof in spaced substantially concentric relation with its outlet end rigidly attached to the outer end of the outerfshelloutwardly of the gas supply port of the outer shell, the interior tubular exhaust shell having its outer end .open and its inner end closed and, spaced a substantial distance from the corresponding JAMES L. BENNETT; oTTo o. sEvEBnoK,

' V Vitnesses:

HOWARD GORDON, .Z.- A. KIMMONS. 1

end of the outer tubular shell whereby the 

